Flamed cone snail
| Flamed cone snail | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Housing made by Conus consors |
||||||||||||
| Systematics | ||||||||||||
|
||||||||||||
| Scientific name | ||||||||||||
| Conus consors | ||||||||||||
| GB Sowerby I , 1833 |
The flame cone or Figured cone shell ( Conus consors ) is a screw from the family of the cone snails (genus Conus ), which in Indopazifik is distributed and fed fish .
features
Conus consors bears a medium-sized to large, moderately firm to heavy snail shell , which in adult snails reaches 5 to 12 cm in length. The circumference of the body is narrowly conical or narrowly conical cylindrical to bulbous conical, the outline at the apex convex, otherwise straight and sometimes slightly concave in the middle. The siphonal fasciole can be weak or protruding. The shoulder is sharply angled to almost rounded. The thread is low to medium high, its outline straight to slightly convex. The Protoconch has about three whorls and measures a maximum of 0.8 mm. The thread of the Teleoconch in adults with a casing length of 5 to 8 cm has about 9 to 11 whorls, of which the first 4 to 8 are covered with tubercles. The seam ramps of the Teleoconch are flat to concave with 2 to 5 to 8 increasing, in the last seam ramps occasionally 10 to 12 spiral grooves. The circumference of the body is covered at the base with spirally running grooves, between which braite bands or strong ribs run.
The basic color of the case is white to pale brown. The area around the body is covered with 1 to 2 spiral bands between the shoulder and the center and a band between the center and the base, the band at the shoulder often being interrupted, absent or fused with the adjacent band. The color of the bands is yellowish brown to purple or dark brown. From the base to the shoulder, dotted, dashed or continuous brown spiral lines extend in varying numbers and arrangements. The protoconch is brown. The seam ramps of the first circumferences of the Teleoconch are drawn on the outer edge with regularly arranged brown dots, the later seam ramps with brown radial markings in varying numbers and conspicuity. The inside of the case mouth is white.
The thin, translucent periostracum varies greatly in color in Conus consors and can be dark gray, grayish brown or shaded from light to dark brown. Sometimes it has tufted spiral lines on the perimeter of the body, a hemmed shoulder, and radial ribs on the seam ramps.
On the coast of Singapore (type locality) the snails have a light brown sole, a foot with dark brown sides and a brown rostrum with yellow-brown edges. The proboscis is orange, the sipho brown with sparse dark brown speckles. In the form of poehlianus on the coast of Papua New Guinea , the foot is orange - pink , lighter on top with brown spots and a brown dotted line in front of the edge. Behind the operculum is a white spot, and on the sides in the marginal area there are dark yellow radial stripes. The sole of the foot is spotted with dark yellow in the middle and at the back. The rostrum is spotted white and dark yellow. The antennae are white with a brown tip, the siphon white with dark yellow spots and horizontal stripes, which are dorsal and proximal, and a gray edge.
The radula teeth associated with a venom gland are described as very similar to those of Conus striatus . They are long and have a short front barb at the tip, a long rear barb with a curved tip on the opposite side and a short additional hook between and almost perpendicular to the others. A saw with teeth and a spur are missing.
distribution and habitat
Conus consors is widespread in the Indo-Pacific from the coast of East Africa via Indonesia to the Marshall Islands , Melanesia and Australia ( Queensland ), but is absent in the Red Sea.
It lives just below the intertidal zone to a depth of about 200 m on sand and mud.
Development cycle
Like all cone snails, Conus consors is segregated, and the male mates with his penis . The female lays numerous egg capsules. The eggs in it have a diameter of around 389 µm at Palau and around 434 µm on the Marshall Islands , from which it is concluded that the Veliger larvae swim freely at Palau for at least 7 days and on the Marshall Islands for at least 4 days, before they sink and metamorphose into crawling snails .
nutrition
Conus consors eats fish that it harpooned with its poisonous radula teeth .
literature
- George Washington Tryon: Manual of Conchology, structural and systematic, with illustrations of the species , vol. VI; Academy of Natural Sciences, Philadelphia 1884. C [onus] consors Sowb., P. 52.
- Jerry G. Walls: Cone Shells: A Synopsis of the Living Conidae TFH Publications, Neptune (New Jersey) 1979. p. 366.
- Dieter Röckel, Werner Korn, Alan J. Kohn: Manual of the Living Conidae Vol. 1: Indo-Pacific Region . Verlag Christa Hemmen, Wiesbaden 1995. The texts on the individual cone snail species of the Indo-Pacific are published on The Conus Biodiversity website with the permission of the authors (see web links).
Web links
Individual evidence
- ↑ Baldomero M. Olivera, Jon Seger, Martin P. Horvath, Alexander Fedosov (2015): Prey-capture Strategies of Fish-hunting Cone Snails: Behavior, Neurobiology and Evolution. Brain, Behavior and Evolution 86 (1), pp. 58-74. PMC 4621268 (free full text)